Steam-trap.



No e73,2s|.- Patented Apr. 30, I90l. w. m. MUSGRAVE.

STEAM TRAP.

Application filed Oct. 17, 1900.;

(No Model.)

2 Sheets-$heet l.

m Mm m Q HI m s uumus u n-ans on, mm'o-u'nw" WASHINGTON. u. c.

No. 673,28I.

Patented Apr. 30, IBM. W. M. MUSGRAVE.

S T E A M T B A P.

{Application filed Oct. 17, 1900 (No Model.)

2 Sheets-Sheet 2.

"m: mama PETER: Puma-mum wnsums'ron D c Unites ATENT Orrics.

\VALTER MARTIN MUSGRAVE, OF BOLTON, ENGLAND.

STEAM-TRAP.

SPECIFICATION formingpart of Letters Patent No. 673,281, dated April 30, 1901.

Application filed October 17, 1900. Serial No. 83,381. No model-Y To all whom it may concern.-

Be it known that I, WALTER MARTIN MUS- GRAVE, a subject of the Queen of England, residing at Bolton, in the county of Lancaster, England, have invented certain new and useful Improvements in Steam-Traps, of which the following is a specification.

This invention relates to a new or improved balanced steam-trap and expansion air-valve and apparatus connected therewith and is designed for the purpose of removing condoused-water and liquid from the cylinders of steam-engines and other purposessuch as steam-pipes, exhaust-pipes, drying-cylinders, drying-tins, and the like-and consists of acylinder mounted on a trunnion or metallic shaft provided with a passage or passages for admitting and emitting water,steam, or liquid that may be received from the cylinder or cylinders of a steam-engine, steampipes, exhaust-pipes, drying-cylinders, drying-tins, and the like. The trunnion or metallic shaft carrying the aforesaid cylinder is mounted in bearings located on a stand or fixing secured to the floor or other convenient position, as desired or required. The trunnion or metallic shaft is provided with a lever and a movable weight for balancingthe cylinder and its connections in any desired position, the latter being effected by means of an adjusting screw suitably mounted. The bearing carrying the inlet end of the trunnion or metallic shaft is provided with a stuffing-box and gland to make a steam and water or liquid tight joint; also, a vertical expansion-pipe, the upper end of which is fitted with a valve-box, valves, and seatings, the valves being coupled to a pivoted lever to which is attached a rod connected with the bearing carrying one end of the trunnion or metallicshaft. Asthecylindermountedonthe trunnion or metallic shaft becomes filled with condensed water or otherliquid it is depressed or oscillated, which action operates an outletvalve and allows the water or liquid to escape, which lightens the weight of the cylinder and allows of the same being reset to its original position by the aid of the aforesaid balance-weight, which action closes the outlet-valve and prevents the escape of steam. The cylinder mounted on the trunnion or metallic shaft may be provided internally with a dip-pipe, coupled to the aforesaid trunnion or metallic shaft for the purpose of conveying the condensed water or liquid away through the said trunnion or metallic shaft, the outlet end of the latter being provided with a dou ble-ported valve located in a valvebox secured to or formed with the bearing carrying the outlet end of the trunnion or metallic shaft.

Theadvantages accruing from this invention are that it may be worked at any pressure and made of any required size, the larger the better, being perfect in itsaction, and by combining the two principles on which steam-traps are generally made, the advantage of the expansion-trap being provided with a free opening while the trap is cold, its operations are insured, the discharging of water or liquid being effected absolutely by the trap. The difference in weight of the cylinder mounted on the trunnion or metallic shaft when empty and when charged with water or liquid is so great that it guarantees the positive and effectual working of the trap.

Figure 1 is a longitudinal sectional elevation of my new or improved balanced steam-trap and expansion air-valve and apparatus connected therewith; Fig. 2, a plan of Fig. 1; and Fig. 3, an enlarged sectional elevation of expansion air-valve.

In order that my invention may be readily and clearly understood, I will now proceed to describe in as succinct a manner as possible, taking each sheet of drawings in their respective order.

A represents the cylinder of my new or improved balanced steam-trap; B and B cylinder covers or ends; 0, trunnion or metallic shaft; D and D bearings carrying trunnion or metallic shaft; E, stand or fixing; F, lever; G, movable balance-weight; H, outlet-valve; I, dip-pipe; J, double-ported valve, and K valvebox.

In all the figures the same letters are employed to indicate corresponding parts.

On the stand or fixing E are mounted the bearings D and D secured thereto by the bolts or set-screws L. In the bearings D and D is mounted the trunnion or metallic shaft 0, provided with the passage M for conveying water, steam, or liquid by means of the pipe N, leading from the cylinder or cylinders of a steam-engine, steam-pipes, exhaustpipes, drying-cylinders, drying-tins, and the IOO like. The trunnion or metallic shaft C is provided with the screwed or threaded projection 0, to which is secured the cylinder-cover B by thenut P. The other end of the cylinder A is fitted with the cylinder-cover B being secured in the usual manner by bolts or setscrews. The under side of the cylinder A is provided with the outlet-valve H, fitted with the lever R, coupled to the rod S by the pin or center T, the other end of the rod S being coupled to the base of the stand or fixing E by the pin or center U. The bearing D, carrying the end of the trunnion or metallic shaft C, is provided with the stuffing-box V and gland W for the purpose of making a tight joint and allow of the oscillating movements of the said trunnion or metallic shaft 0 and the cylinder A and cylinder-covers B and B attached thereto, the other end of the said trunnion or metallic shaft 0 being mounted in the bearing-D on the stand or fixing E. The trunnion or metallic shaft 0 is fitted with the lever F, on which is mounted the adjustable or movable weight G for balancing the cylinder A and its connections in any desired position, the latter being effected by means of the adjusting-screw X in. the fixing Y, secured to the base of the stand or fixing E. The bearing D is provided on its upper side with the boss or projection Z, in which is screwed the vertical expansion-pipe a, on the upper end of which is located the valve-box I), provided with the seatings c, on which are disposed the valves d and e, coupled together by the stem f. To the upper side of the valve 01 is secured the lever g by the pin or center h, the lever g being pivoted to'the arms '11 on the side of the valve-box b by the pin or centerj. To the lever g is attached the rod is by the pin or center Z, the rod is being secured to, the bearingD by the pin or center m. When steam is shut off from the cylinder A, the expansion-pipe a contracts, and owing to the-fixedlength of the rod is the lever g raises the 'Valves d and e from their seats 0, which allows of atmospheric air being admitted through the pipe at to the cylinder A, thus destroying the-vacuum and pre'venting'water or liquid being drawn into the cylinder or cylinders of a steam-engine, steam-pipes, exhaustpipes, drying-cylinders, dryingtins, and the like without closing the trap. Immediately steam enters the inlet-pipe N and the trunnion or metallic shaft 0 atmospheric air is forced from the cylinder A through the expansion-pipe a into the valve-box b and out through the valves (1 and e, and as the expansion-pipe a is gradually lengthened by heat from the steam the valve-seats c, in and on the valve-box b, are forced against the fixed valves 01 and 6, thereby enabling the rest of the work to be effectively performed by the trap.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is 1. In an apparatus of the character described, a rocking cylinder, an outlet-valve connected thereto and operated thereby, and expansible means for admitting atmospheric pressure to said cylinder.

2. In a steam-trap, a hollow trunnion, a counterbalance-weight connected to one side thereof, a rocking cylinder connected to the opposite side thereof, in com mu nication therewith, and operated thereby, an outlet-valve connected directlyto said cylinder and operated thereby, and means in communication with said trunnion for automatically admitting atmospheric pressure to said cylinder.

3. In an apparatus of the character described, a rocking cylinder, a hollow trunnion connected thereto, communicating with the interior of said cylinder and connected to a supply-pipe, an outlet-valve operated by said cylinder, an expansible pipe in communication With said trunnion, and means operated by said pipe for admitting atmospheric pressure to said cylinder.

4. In an apparatus of the character described, a cylinder, a hollow trunnion connected thereto, communicating with the interior thereof and connected to a supply- ,pipe, bearings for said trunnion, an outletvalve operated by said cylinder, a lever car- 'rying an adjustable weight attached to'said trunnion, means forv limiting the movement of said lever,.and expansible-means connected to said trunnion for admitting atmospheric pressure to said-cylinder. w

5. In an apparatus of the character described, a cylinder, a hollow trunnion attached to said cylinder and in communication with the interior thereof, a counterbalance-lever connected to said trunnion, an

outlet-valve for the said cylinder, connected directly thereto and operated thereby, and a valve mechanism connected to said trunnion for admitting atmospheric pressure to said cylinder.

6. In an apparatus of the character described, a hollow trunnion mounted in suitable'bearings and connected to a supply-pipe, a cylinder suitably secured to said trunnion, a counterbalance-lever connected to said trunnion, an outlet-valve operated by said cylinder, an expansible pipe connected to said trunnion and carrying valve-seatings, valves adapted to engage said sea-tings, and means for operating said valves.

7. In an apparatus of the character described, a cylinder in communication with a source of supply, a counterbalance-lever, an outlet valve operated by said cylinder, a valve, and means for automatically ad mitting atmospheric pressure to said cylinder.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

WALTER MARTIN. MUSGRAVE.

Witnesses:

EDMUND CHADWIoK, JAs. STEWART BROADFOOT. 

